I'm trying to find info about the effects on children from changing schools. A single mom I know has in the past 5 years had her two sons in 4 different houses and 2 different schools. They just started in a new school 4 months ago and she's moving again over Christmas break. This will be their third school. One boy is 9, the other is 13. Each move has put them farther away from their father (my fiance'). Can anyone help?